Compositions: ceramic – Ceramic compositions – Glass compositions – compositions containing glass other than...
Patent
1996-09-11
1997-12-09
Czaja, Donald E.
Compositions: ceramic
Ceramic compositions
Glass compositions, compositions containing glass other than...
501900, 65 174, 65 175, 65414, 65415, C03B 2000
Patent
active
056960387
ABSTRACT:
Oscillation/rotation patterns for improving the off-axis homogeneity of fused silica boules are provided. The patterns reduce the optical effects of periodic off-axis striae by decreasing the ratio of .DELTA.n.sub.striae to .DELTA.z.sub.striae, where .DELTA.n.sub.striae is the average peak-to-valley magnitude of the striae and .DELTA.z.sub.striae is their average peak-to-peak period. The oscillation/rotation patterns have long repeat periods and cause soot-producing burners to trace out substantially spiral-shaped patterns on the surface of the boule.
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Corning Incorporated
Czaja Donald E.
Klee Maurice M.
Vincent Sean
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